Spoofing 'Discovered Areas" function.

[JohnnyGrey]

My ultimate goal is to be allowed to route a full "Undiscovered" path through the whole of Northrend/Outlands, however, I already have those continents explored. Is there any way to plot this route anyways?

I plan to sell Explore Northrend/Outland's achievement flights

EDIT: If needed I could take the long way and manually plot favorites. This is a viable option if the above cannot be achieved.